United States. Advisory Committee on Employment Statistics
, Willits, Joseph H. (Joseph Henry), 1889-1979
and Clague, Ewan, 1896-1987.
Report of the Advisory Committee on Employment Statistics : Bulletin of the United States Bureau of Labor Statistics, No. 542 ,
Washington:
U.S. Govt. Print. Off.,
May 1931, https://fraser.stlouisfed.org/title/4086,
accessed on September 12, 2024.